Permutation-lock



No Model.)

B. BUNDY. PERMUTATION LOCK.

:amented Jan, 1,1895.

UNITED STATES PATEN BENJAMIN BUNDY, OF SABINA, OIIIO.

PERM UTATlON-LOCK.

SPECIFICATION forming part of Letters Patent No. 531,902, dated Januaryl 1 895.

Application filed April 27, 1894. Serial No. 509,253. (No model.)

To all whom it may concern.-

Be it known that I, BENJAMIN BUNDY, a citizen of the United States,residing at Sabna, in the county of Clinton and State of Ohio, haveinvented certain new and useful Improvements in Combination-Locks; and Ido hereby declare the following to be a full, clear, and exactdescription ot' the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

My invention relates to improvements in combination locks; and theobject thereof is to provide a simple, edective and durable means forholding the bolt or locking device in a fixed position; and to providecertain registering devices or combinations which when arranged in somepredetermined position will release a slide or plunger or other movablebolt-engaging device, but when not in this position will preventmovement of the anle, thereby rigidly holding the bolt of the Anotherobject is to provide means for arranging the registering devices orcombinations in any predetermined position.

A further object of my invention is to provide a bolt-holding devicewhich upon the releasing of same from the bolt will simultaneouslyarrange the parts so that the combination may be readily changed.

lVith these and other objects in view the invention consists in thenovel constructie n and combination of the several parts, as will behereinafter more fully described, and particularly pointed out in theclaims at the end of the description.

In the accompanying drawings, like letters of reference are used todesignate like parts in the several figures.

Figure l is a front elevation of the lock. Fig. 2 is an end elevation.Fig. 3 is a vertical section on the line III-III of Fig. l, with therear plate removed and showing the slide or plunger in elevation. Fig. 4is a sectional plan on the line IV--IV of Fig. l. Fig. 5 is a rearelevation of the lock with the bolt and retaining plate removed toexpose the working parts. Fig. 6 is a vertical sectional view on theline VI-VI of Fig. 7 illustrating a modification. Fig. 7 is a verticalsectional longitudinal view of the form shown in Fig.

l 6 with a bolt or hasp in connection therewith, l illustrating theparts in position for the withdrawal of the plunger for the removal ofthe hasp; and Fig. S is a vertical sectional fragmentary View on theline VIII-VIII of Fig. 7.

A designates a casing of any suitable construction having a removableplate a in the rear thereof and the plate ct' arranged within thecasing; the latter plate being either separate from the casing or formedintegrally therewith.

At B, B are the combination or registering devices which are preferablylocated on opposite sides of the center of the casing and provided Withthe handles or knobs b, b, the said knobs each having a spindle b'extending within the casing in which the said spindles may revolve. Nearthe inner end of each spindle is a notched wheel b2 rigidly secured toor formed integrally with said spindle. Surrounding the wheels b2 arethe rings b3 each having a single slot b4 adapted to register with thenotches of the wheels b2 by turning the knobs b, b, when the parts arein an unlocked position, at which time the slot of the ring and one ofthe notches of the Wheel -is in position to receive a pin b5, so thatboth wheel and ring may rotate in unison to lock the parts together aswill presently appear. Surrounding the rings b3 and fitting into thecasing is a suitably apertured plate b which apertures provide bearingsurfaces for the peripheries of said rings when rotated as shown in Fig.5. For retaining the working parts within the casing I providearemovable apertured plate bl iu the apertures of which the inner endsof the spindle b, of the combination devices have a bearing.

C is the bolt or a similar locking device located between the removableplate 117 and the plate @of the easing between which said bolt isslidingly held. The bolt is held tixed or removable by the engagement ofthe end of the stem d of the slide or plunger D engaging an aperture cin said bolt. This plunger is preferably centrally located in the casingand between the oppositely arranged combination devices B, B. Theplunger-is slidingly held in the casing and is provided with outwardlyextending bifnrcated arms or projections CZ arranged on opposite sidesof the stern of the plunger and adapted to register with the slots inthe rings b3 when forced inwardly to engage the bolt, and to passthrough the same when the stem is withdrawn from the bolt. The arms dhave each a slot d2 something to larger than the thickness of the ringsh3 so that when said slots register with the slotted rings, as shown inFig. 4, the said rings may revolve throughthe slots ot' the arms to pre-Vent the plunger from being withdrawn from I5 the bolt. The arms d ofthe plunger further serve to carry the pins b5 out of engagement withthe notched wheels and rings when the same are brought into alignmentwith the slots cl2 of the arms d for the purpose of zo withdrawing theplunger from the bolt to unlock the same and to change the combinationif So desired, and to carry the pins to place the same in the slots ofthe rings h3 and notches of the wheels'b2 when theplunger is forced inz5 wardly to engage the bolt as shown in full lines in Fig.4. Theplunger-is further provided with a knob or handle cl3 on the outer endofthe stem d for the purpose of readily operating said plunger anddisengaging same from the aperture c of the bolt. To allow for themovement of the plunger, the plates hl, h6 and a', of the x casing haveeach a slot something larger than but formed similarly to the projectingarms d of the plunger to permit said plunger to slide, as shown indotted lines in Fig. 4, but which prevents any rotary movement of theplunger. At dlis a slot in the front of the casing transversely arrangedto the slots in which the plunger arms slide. This slot permits the 4oplunger and arms to be readily inserted within the casing and yetprevents its withdrawal when turned at an angle to said slot.

On the peripheries of the knobs h of the combination devices arearranged figures or other characters agreeing in number to the number ofnotches on the Wheels b2. These characters are adapted to register witha suitable pointer or indicator, such for instance as is indicated bythe line e on the casing, so 5o that the combination may be set in anypredetermined position by turning the knobs b. Other means, however, maybe employed for this purpose if desired.

The parts being unlocked and the position of the knobs t) beingdetermined as described and a notch in each wheel b2 brought into`alignment with the slots of the rings h3 and arms d of the plunger, itwill be seen that by forcing the plunger inwardly from the uno lockedposition shown in dotted lines in Fig.

4 the end of the stem d will engage the aper- Y ture c of the bolt. Thismovement of the plunger places the pins b5, which are at this timecarried by the bifurcated arms cl within the slots of the rings and inengagement with the registering notches of the Wheels Z22; the slots d2,of the arms also registering with said rings. By turning the knobs l)the Wheels h2 and the rings h3 will rotate together by the action of thepin b5, as best shown in Fig. 5. At this time the parts are locked, asthe solid parts of the rings b3 which pass through the slots of the armsd', of the plunger will rigidly hold the same in engagement with thebolt, and yet allow the ring and wheels to re- Volve. By bringing thepins h5 into alignment with the slots d2 of the bifurcated arms, theplunger may be disengaged from the bolt and at the same time the pins b5will be carried with thearms, as shown in dotted lines in Fig. 4. Thiswill permit the notched wheels h2 to be rotated independently of thering h3, thereby allowing the combination to be changed, if desired, bysimply turning the knobs b.

I have not illustrated nor described any means for moving the holt C asit is obvious that any well-known means may be employed for thispurpose.

I do not wish to confine myself to the exact construction shown for Imay vary this in some instances without departing from the spirit of myinvention.

The invention is not only applicable to locks having a sliding bolt, butto any form 9 of lock in which the locking device may be engaged by asliding plunger.

In Figs. 6, 7 and 8 I have shown howa single or a series of combinationsmay be arranged around a stem f; the said stem being passed throughcentral apertures of a single or a series ot' rings f. Slidingly held ina slot in the stemfis a plungerf2 having a series of slots correspondingto the number of combination devices arranged around the stem, each slotpermitting the rotation of one of said combination devices when the sameare in alignment with said slots. Each coinbination device has a ring fprovided with a slot f3 which is adapted to register with the internalgrooves or notches f4 of the annular inclosing casing F, (there being asmany casings as there are rings) each casing being preferably separatedby a washer f6 from the next adjacent casing, the said washer beingpreferably secured to the stem fand provided with a slot for the passageof the plunger-f2. The casings F have letters or gures stamped orotherwise formed upon their peripheries corresponding in number to theslots f4 of said casings, so that the combinations may be changed or setwhen the figures are arranged in some` predetermined position. Thesecasings are rotatably held upon the rings f', but may rotate in unisontherewith around the stem f when the pins f5 engage the notches of thecasings F and the slots f3 of the ringsf as indicated in Fig. 6.

G is a hasp or other locking device having the enlarged ends g and g',the former havi oo sof

tenace ing a slot c2 for the endot the'plunger f2 to engage while thelatter is provided with a T- shaped slot g3. This slot is so shaped thatwhen the plunger is pulled in the direction indicated by the arrow thesmaller portion of the plunger will register with the narrow portion ofthe slot g3 allowing the hasp to be removed, but when the plunger is inthe position shown in Fig. 7, the enlarged portion g4 of the plunger f2,will engage the enlarged portion of the slot g3 at the same time thatits end engages the slot in the end g of the hasp, thereby rigidlyholding the hasp in a locked posit-ion. The operation of this form issimilar to the operation of the form illustrated in the other views anddilters mainly from them in the arrangement of the parts.

It will be seen that by forcing the plunger inwardly the end 0f the samewill engage the locking device G arranged in the path of movement ofsaid plunger. This movement of the plunger places the pins f5, which arecarried by the notches of the plunger, within the slots of the rings andin engagement with the registering notches of the casings F5 the slotsof the plunger also registering with said rin gs. By turning the casingsF to some predetermined position the rings f will rotate with the saidcasings by the action of the pins At this time the solid parts of therings f which pass through the slots of the plunger will rigidly holdthe same in engagement with the locking device, and yet will allow thecasings and rings to revolve. By bring- .ing the pins f5 into alignmentwith the slots of the plunger, the same may be disengaged from thelocking device, and at the same time the pins f5 will be carried withthe plunger to the spaces between the casings or in alignment with thewashers when used, which separate said casings. This will permit thecasings F to be rotated independently of the rings f', thereby allowingthe combination to be changed, if desired, by simply turning thecasings.

I may arrange more than two combination devices around the plunger D,which would have a corresponding number of bifurcated arms; or l mightarrange more than one set of notched wheels in each combination deviceit' so desired.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent of the United States, is-

1. A combination lock having alocking den vice, a movable plungerarranged to engage said locking device, a combination device arrangedaround the plunger, a loose pin arranged to be carried by thecombination device when the bolt is in a locked position and be carriedby the plunger before the plunger can be disengaged from the lockingdevice, substantially as described.

2. A lock of the character described having a locking device, a plungerarranged to engage the locking device,combination devices arrangedaround the plunger, and means carried by the plunger for simultaneouslyarranging thepartsso that the combination may be changed when theplunger is disengaged from the locking device,substantially asdescribed.

3. A lock of the character1 described having a casing and a lockingdevice, a plunger held within the casing arranged to vallow or preventmovement of the locking device, combination devices surrounding theplunger and adapted to prevent any movement of said plunger except whenin some predetermined position, and means operated by the plunger forpermitting the combination to be changed, substantially als described.

4. Alock of the character described having a casing and a locking devicewithin said casing, a plunger held within the casing and engaging saidlocking device, a combination device comprising a notched wheel and aring having a slot therein located within said casing, the said ringadapted to rotate separately7 or in unison with the notched wheel to setor alter the combination, and means carried by the plunger forsimultaneously arranging the parts to change said combination when theplunger is disengaged from the locking device, subst-antially asdescribed.

5; A combination lockl having a casing and a locking device arrangedwithin said casing, a plunger arranged to engage the locking device andhaving outwardly projecting bifurcated arms on the stem of the plunger,and means located within the casing for engaging said arms to preventthe pluugerfrom being disengaged from the locking device, substantiallyas described.

6. Aloclr ot' the character described having a casing and a locking boltarranged to slide in said casing, a plunger slidingly held within thecasing and engaging a portion of the locking bolt, the said plungerhaving outwardly extending bifurcated arms located on the stem of theplunger and adapted to move with same, a slotted ring arranged in thepath of movement of the arms of the plunger, and a notched wheelrotatably held within the slotted ring, and means for rotating both ringand notched wheel in unison,the said slotted ring adapted to prevent orallow the bolt to be released from the plunger, substantially asdescribed.

7. Alock of the, character described having a casing and a locking boltarranged to slide in said casing, a plunger slidinglyheld within thecasing adapted to engage an aperture in said locking bolt, the saidplunger having outwardly extending bifu rcated arms located on the stemof the plunger, slotted rings located on opposite sides of the plungerand arranged in the path of movement of the arms of said plunger, anotched wheel rotatably held within each slotted ring, a pin adapted tobe carried by each arm of the plunger and be placed by same in alignmentIOO 5 a casing and a locking device Within said casing, a plungerslidngly held Wit-.hin thecasing, and adapted to engage the lockingdevice, combination devices located within the C casing and. arrangedaround the plunger, a

ro removable plate arranged to retain the combination devices within thecasing and means v for actuating said combinations, substantially asdescribed. f

In testimony whereofI ax my signature in presence of two Witnesses.

BENJAMIN BUNDY.

Witnesses:

P. J. CURREN, J. W. SPURGEON.

